How does a Secular Instability Grow in a Hyperaccretion Flow?

Mariko Kimura, Shin Mineshige, Norita Kawanaka

Hyperaccretion flows with mass accretion rates far above the Eddington rate have an N-shaped equilibrium curve on the $\Sigma$-$\dot{M}$ plane (with $\Sigma$ and $\dot{M}$ being surface dens…